HT56RB27 datasheet(49/153 Pages) HOLTEK

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PWM Register Pairs

- PWMnH/PWMnL (n=0~3)

PWMnH Register

Bit

76543210

Name

D11

D10

R/W

POR

00000000

PWMnL Register

Bit

76543210

Name

¾¾¾

PWMnEN

R/W

¾¾¾

R/W

POR

0000

¾¾¾

²¾²

unimplemented, read as

²0²

D11~D4: PWMn duty DC value

D3~D0: PWMn duty AC value

PWMnEN: PWMn output enable control

0: I/O pin enable

1: PWM output pin enable

PWM Programming Example

The following sample program shows how the PWM output is setup and controlled.

mov

a,64h

; setup PWM0 value to 1600 decimal which is 640H

mov

pwm0h,a

; setup PWM0H register value

clr

pwm0l

; setup PWM0L register value

clr

pcc.4

; setup pin PC4 as an output

set

pwm0en

; set the PWM0 enable bit

set

pc.4

; Enable the PWM0 output

clr

pc.4

; PWM0 output disabled - PC4 will remain low

HT56RB27

TinyPowerTM A/D Type Smart Card OTP MCU

with DAC, ISO 7816 and USB Interfaces

Rev. 1.20

April 26, 2013

f S Y S / 2

P W M

[ P W M ] = 1 6 0 0

[ P W M ] = 1 6 0 1

P W M

[ P W M ] = 1 6 0 2

P W M

[ P W M ] = 1 6 1 5

P W M

P W M c y c l e : 4 0 9 6 / f S Y S

1 0 0 / 2 5 6

1 0 1 / 2 5 6

M o d u l a t i o n c y c l e 0

P W M m o d u l a t i o n p e r i o d : 2 5 6 / f S Y S

M o d u l a t i o n c y c l e 1

M o d u l a t i o n c y c l e 2

M o d u l a t i o n c y c l e 1 5

M o d u l a t i o n c y c l e 0

1 0 0 / 2 5 6

1 0 1 / 2 5 6

1 0 0 / 2 5 6

1 0 1 / 2 5 6

1 0 0 / 2 5 6

1 0 1 / 2 5 6

8+4 PWM Mode

HT56RB27 Fiches technique(PDF) 49 Page - Holtek Semiconductor Inc

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